Edward deming



(No Model.) 2 Sheets-Sheet 1; E. DEMING. ELECTRIC MACHINE FOR RAILWAYSYSTEMS. v No. 528,465. Patented 0m. 30, 1894.

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Patented Oct. 30, 1894.

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EDWARD DEMING, OF NEW YORK, N. Y., ASSIGNOR OF THREE-FOURTHS TO SAMUELCORN, HENRY CORN, ADOLPH KAUFMAN, AND ISAAC STERN, OF

SAME PLACE.

ELECTRIC MACHINE FOR RAILWAY SYSTEMS.

SPECIFICATION forming part of Letters Patent No. 528,465,dated October30, 1894. Application filed May 27, 1893- Serial No. 475,738. (Nomodel.)

To aZZ whom it may concern:

Be it known that I, EDWARD DEMING, a citizen of the United States ofAmerica, residing at New York, in the county and State of New York, haveinvented certain new and useful Improvements in Electric Track-Machinesfor Railway Systems, (Case No. 7,) of which the following is aspecification.

My invention relates to mechanism by Fig. 2 is a similar View on asmaller scale and more in outline of two of the mechanisms shown in Fig.1, together with such of the electric circuits which are necessary toex- 2 5 plain the operation.

The phase of the right hand device is similar to that shown in Fig. 1,while that at the left is normal, having been set in its normal positionbecause of the operation which has so taken place in the right handdevice.

The device embodying the invention con- I sists of the combination withthe track A and with the wheel B of a T-trip G vertically movable andprovided with guide rods D in 3 5 bearings D, a vertically movable bar Earranged in bearings E, and provided with a projectionF at its lowerend, and with a circuit closer G near its center, the bar E being loosein its bearings, and guided laterally by a pin H on the opposite sidefrom the projection F, a spring I reacting against the bar E in adirection opposite to that of the pressure wheel B, of a magnet J havingan armature K within inductive relation thereto, and pro- 5 vided with aprojection F, a catch L connected to the armature K bya spring M, andfor the purpose of simultaneously holding down the bar E, and holdingaway the armature K from the magnet J, by resting upon the,

projections F, F, while extending the spring M. A duplication of theabove named elements is found at the'left of those just described, andsimilarly lettered, the magnet on the left being in circuit with saidcircuit closer or switch, and with a generator N. 5

The circuit from .the generator may be traced through the left handmagnet J by passing from the pole O to the circuit closer G on the rightto the magnet J on the left, then to ground, and finally to the pole O.

The operation is as follows:-Referring to the right hand track machinethe wheel B presses down the trip 0. The bar'E is also moved downwardand the circuit closer G completes the circuit through the magnetJ onthe left. The spring 1 is so compressed that the catch L comes upon theprojections F, F, and the spring'M becomes distended, while at the sametime the armature K is moved away from the magnet J. The wheel issupposed to have moved previously over the left hand track machine, andset it in the same manner as just described with reference to the righthand machine. Just as soon as the circuit is closed through the lefthand magnet the armature K thereof is attracted to the catch L andconsequently releases the bar E and the trip and circuit closer andsprings return to their normal positions.

As an illustration of the use of my invention it may be stated that whenthe left hand trip 0 is down there is a train on the block between thetwo track machines. As soon as the said trip rises it serves as a signalthat the said train has left said block and that therefore said block issafe for passage by a second train.

I claim as my invention- 1. The combination with a rail and wheelthereon, of a vertically movable trip located in the path of said wheel,a Vertically movable bar in the path of the trip, an electric switchcarried by said bar, a spring bearing against said bar and resisting itsaction, a pivoted catch for engaging and retaining the bar in 5 itslowest position, andamagnet whose armature is in the path of said catch.

2. The combination with a rail and wheel thereon, of a verticallymovable trip located in the path of said wheel, a vertically movable 1oo bar in the path of a trip, an electric switch carried by said bar, aspring bearing against said bar and resisting its action, a magnet, apivoted armature for the magnet, and means for holding the bar in itslowest position and the armature away from its magnet, said meansconsisting of a pivoted catch, between the said bar and said armature,and a spring by which the catch is suspended from said armature.

3. The combination with a rail and wheel thereon, of a verticallymovable trip located in the path of said wheel, a vertically movable barin the path of a trip, an electric switch carried by said bar, a springbearing against said bar and resisting its action, a magnet, a pivotedarmature for the magnet and a catch for holding the bar in its lowestposition and the armature away from its magnet, said means consisting ofa pivoted catch, between the said bar and said armature, and aspring bywhich the catch is suspended from said armature.

4. The combination with a rail and wheel thereon, of a verticallymovable trip located in the path of said wheel, a vertically movable barin the path of a trip, an electric switch carried by said bar, a springbearing against said bar and resisting its action, a magnet, a pivotedarmature for the magnet,and means for holding the bar in its lowestposition and the armature away from its magnet,a second set of elementssubstantially as the above in which the magnet is in circuit with saidswitch, said means consisting of a pivoted catch, between the said barand said armature, and a spring by which the catch is suspended fromable bar in the path of said trip, an arm upon 0 the bar carrying acircuit closer, a projection upon the bar,a magnet, an armature thereforhaving a projection, a catch for resting upon the projections inpredetermined positions,

and a spring resisting the action of the bar in a direction opposite tothat of the pressure of the said wheel.

In testimony that I claim the foregoing as my invention I have signed myname, in presence of two witnesses, this 23d day of May,

ED \VARD DEMING.

Witnesses:

WILLIAM A. OoURsEN, Jr., EDWARD P. THOMPSON.

